How to Introduce Exfoliating Acids
How to Introduce Exfoliating Acids — a measured way to add chemical exfoliants such as AHAs or BHAs to a routine so they remove dead surface cells and improve texture without over-exfoliating or damaging the barrier. It generally means starting at a low concentration and low frequency, then gradually increasing as the skin adapts.
Key points
- AHAs like glycolic and lactic acid work mainly on the skin surface, while BHAs like salicylic acid are oil-soluble and can penetrate into pores.
- Beginning with a lower strength once or twice a week helps reduce the risk of stinging, redness, and over-exfoliation.
- Signs of over-exfoliation include persistent redness, tightness, stinging, and increased sensitivity, which signal a need to scale back.
- Because acids can increase sun sensitivity, daily broad-spectrum sunscreen is recommended, and combining acids with retinoids in the same routine can heighten irritation.
Frequently asked
What is the difference between AHAs and BHAs?
AHAs are water-soluble and exfoliate the skin surface to improve texture and tone, while BHAs are oil-soluble and can work inside pores, making them common choices for oily or congested skin.
How often should I exfoliate with acids?
Many people start once or twice a week and adjust based on tolerance; frequency depends on the product strength and skin type, and cutting back is wise if irritation appears.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
